Power plate press



D 9, 1941. on KAIDDELAND 2,265,772

POWER PLATE PRESS Filed April "26, 1959 3 Sheets-Sheet 2 INVENTOR. CHIP/$75M E flfmoz-zn/vo ATTORNEY.

Dec. 9, 1941. c. R. KADDELAND POWER PLATE PRESS Filed April 26, 1939 :s Sheets-Sheet 5 17 I CHfi/STEN INVENTOR. mmpEm/vp ATTORNEY.

Patented Dec. 9, 1941 UNITED STATES PATENT OFFICE POWER PLATE PRESS Christen R. Kaddeland, Shelton, Conn, assignor to Harris-Seybold-Potter Company, Cleveland, Ohio, a corporation of Delaware Application April 26, 1939, Serial No. 270,108

14 Claims. (01. 101-159) My invention relates to certain improved devices and mechanisms adapted for use in power plate presses in conjunction with the bed drive and also the guiding devices for the travelling plate supporting beds in such presses.

The objects of my invention are, among other T they pass around the corners of their rectilinear orbit. Such improved devices form a positive guide for the beds at all times throughout their entire circuit in the press.

A further feature of my invention is to provide improved guiding devices that may be adjustedto compensate for wear of the parts; also to prevent all looseness and play of the beds and driving mechanism in any portion of their rectilinear travel; and further to position the guides inside the travel path of the beds. 7

A further feature of my invention is to provide mountings for the chain sprockets that may be adjusted without disturbing their relation to the drive sprocket for the chain that actuates the plate-supporting beds. improved press the pressure reaction roller that supports the beds as they pass under the impres sion member forms a part of the bed guiding devices in that particular portion of the travel of Further objects and advantages will appear hereinafter and be particularly pointed out in the claims.

The drawings show a preferred embodiment of my invention in a power plate press in whicht Fig. 1 is a top plan view showing the four beds in different stages of their restilinear and arcuate travel through the press, the usual inking and wiping mechanisms being omitted;

impression mechanisms} Furthermore in my the beds. i1: 335

Similar numerals refer to similar parts throughout the several figures.

Referring to the drawings, the frame I which carries the various parts of the machine is rectangular in form and is supported on the four standards 8. As shown in Fig. 1, four rectangular beds 9 are embodied in the press to travel around the frame 1 in the direction of the arrow, the beds 53 supporting the engraved plates I (Figs. 2-5). The beds 9 and associated parts are alike in structure, and a description of one will suffice for all.

In the center of the bed 9 is positioned the stud l I having the downwardly extending bore 12 within which is fitted the pin 13 affixed to the drive chain I l (Figs. 2, 4 and Beneath the lower surface of the bed 9 is the anti-friction roller 15 pivoted on the lower end of the stud I l.

Inside the four corners of the bed 9 and depending from the under side thereof are the guide rollers 16, 11, I8 and 19 each carried by the pins 20 secured to the bed 9 (Figs. 2, 4 and 5), such guide rollers being adapted to maintain the beds 9 in proper alinement and position throughout their entire rectilinear and arcuate travel around the press.

Coacting with the guide rollers Iii-l9 are adjustable guide rails comprising a guide system that prevents all play in the beds in their travel. Inside three of the straight portions of the frame 1 (shown in Fig. 1 as the two sides and bottom portions) are the outer rails 21 alike in construction which are fastened to the frame 9 by screws 22. On the top side of Fig. 1 the rail 2| is formed in two sections to accommodate the .reaction roller located between such sections Fig. 2 is a sectional view on the line 2- -2 of Fig. 1;

Fig. 3 is a side view on the line 33 of Fig. 2; Fig. 4 is an enlarged section on the line 4-4 of Fig. 1;

hereinafter to be described. Suitable spaced from the rails 2| to form the slots 23 for the passage of the guide rollers I 6I9 are the centre inside guide plates 24 having cam surfaces 25 at either end which plates are secured to the frame 1 by screws 26. The top surfaces of the guide plates 24 preferably carry oil pads 21 to lubricate the under surfaces of the beds 9 in their travel. At the four corners of the frame 1 are positioned the cam plates 28 which are of similar configuration having-the straight edge 30 opposite and. adjacent the corners of the frame 1, and at their ends the cam surfaces 3| which in conjunction with the cam surfaces 25 of the guide plates 24 form curved grooves 32 and 33 for the passage .of the guide rollers so as to guide the beds 9 around the corners as the latter travel in their arcuate. paths through the press.

and .66 secured to the frame 1.

being adjustably mounted so as to provide means for taking up any looseness in the chain I4 due to wear or other causes. The chain I4 is actuated by the drive sprocket 36. The four sprocketc 3431.are mounted on the stub-shafts 38,

the shafts for the sprockets 34 and 35 being journalled in the plate 39 adjustably secured in the recessed portion 40 of the frame (Fig.

As the drive chain 14 engages the successive sprockets 34-31 in making its arcuate path around the corners of the press the rollers I5 engage the curved cam surface 4| formed on the inside of the cam-plates 28 (Figs. 1, 5 and 6'),-

while in the straightline travel of the chain 14 between the sprockets, the rollers l5 travel in the space 42 formed betweenthe guide plates 24 and the inner rail 43 against which the rollers l5 ride (Figs. 4 and 6). a

' To guide the drive chain l4 itself in its straight-line path between the sprockets, I have provided the inner rails 44 and the outer rails.

45 carried on the frame l'that contact with the rollers 46 on the chain 14 (Figs. 14 and ,6). These rails 44 and 45 not only keep the chain M in its straight-line path but also prevent any sagging of such chain between the sprockets.

The drive chain !4 is actuated to impart a uniform movement to the beds 9 in synchronism with the revolutions of the reaction roller and impression cylinder by any desired mechanism.

In the embodiment shown in Figs. 1-3, the electric motor, rotates the pulley 48 to actuate the belt 49 that drives the power shaft 59 journalled in the yoke 5| secured to the under side of the frame'l. The shaft 59 carries'the worm 52 that drives the worm gear 53 mounted on the shaft 54 journalled in the yoke 5| and the bracket 55 fastened "tothe frame 1. The inner end of the 'shaft .54 carried the bevel gear 56 that rotates the bevel gear 51 mounted on the stub-shaft 38 that operates the drive sprocket 36 fastened to j the shaft 38. V I r Fastened to the shaft 54 is the gear 59 that iactuate's thegear 69 which in turn rotates the gear 6|. This gear Bl engagesthe gear 62 carrying thelover-runnin'g clutch 63 mounted on the shaft'64 journalled in the upright standards 65 carries the reaction rollers 61 (Figs. 1 and 2),

I over which rollers the beds 9 travel when making their straight-line path across the top of Fig. 1.

3 The gear '6! also drives the idler gear 53 that actuates the gear 69 carried by the shaft 19 Referring to Figs. 1 and 5, the sprockets 34 and 35 are adjustably mounted in the frame so that they may be suitably shifted and adjusted without affecting the relation of the drive sprocket 35. Such adjusting devices are shown on the right of Fig. 1 and are similar in construction: The plate '39 is movable to the left and right (Fig. 5) and adjusted at either end by the screwbolts 75 that pass through the lugs 76 integral with the frame I when the locking bolts 11 are .loosened. The bolts 15 fit into the screw-threaded bores 18 cut in the outer ends of the plate 39 to 'move the plate and the sprockets 34 and 35 as well as their associated guiding devices so as to take up any looseness of the drive chain l4 and maintain the beds 9 in proper position in their travel around the frame. Preferably I provide the improved press with the gutter 79 formed inside the outer edges of the frame 1 to contain oil or other lubricant.

' The operation of the various mechanisms and devices in my improved power plate press have been described in conjunction with the separate descriptions of their structural details, but in Fig. 6 I have shown in diagrammatic form the several positions of one of the beds 9 as it passes around a corner of the press with the successive positions of the guide rollers Iii-49 as Well as the roller 15 located in the center of the bed 9 as the rollers travel in the directions shown by the arrows in contact with the guiding devices that are located inside the edges of the travelling bed. Such continuity of the guide system is maintained not only as the beds travel in their arcuate paths around the sprockets but also when the beds move in their hereinbefore described straight-line paths between the sprockets including the passage over the reaction rollers 61 j which provide a positive guide inthis impression -rangement of mechanisms as shown in the The shaft 64 preferred form illustrated in the drawings, since various changes may be made in the specific construction without departing from the main principles of the invention and without sacrificing its chief advantages in use.

I claim as my invention:

1. In a power plate press, a frame, a bed travelling around the frame, means for driving the bed, guiding devices for the bed, andmeans comprising a plate transversely movable in the frame and carrying a part of the bed-driving means and guiding devices for adjusting said part of the bed drivingmeans and guiding de- Vices simultaneously in a rectilinear path with- (Fig; 2). The reaction rollers 67 and impression 1 cylinder revolve in unison as shown by the arrows in Fig. 3, and their peripheral speeds are i normally that of the linear travel of the beds 9 that pass between them. As shown in Figs.

: 1 and '2; the reaction rollers 61 aregspaced to form 3 the central groove l2- to provide a guide for the drivechain It and roller 15, while grooves 13 and 1.4 vformed'in the roller 61 inside their ends By such construction the continuity :of the bed guide is preserved as the beds 9 and plate 19 pass beneath the impression cylinder 1|.

are. in alinement with theguide rollers lit-I9.

out disturbing the operation of the bed drive and the travel of the bed.

2. In a power plate press, a frame, a bed travelling around the frame, means for driving the bed, guiding devices for the bed, and means comprising a plate transversely movable in the frame and carrying a part of [the bed-driving means and guiding devices for adjusting said part of the guiding devices in arectilinear pathon one side of the frame without disturbing the operation of the bed drive.

'3. In a power plate press, a frame and a bed travelling around the frame, guiding devices at the corners of the frame having cam surfaces and five members depending from the bed inside the edges thereof, at least three of said members engaging the cam surfaces to guide the bed around :said corners of the frame, and means comprising a transversely movable plate carrying part of said guiding devices for adjusting same in a rectilinear path on said frame.

4. In a power plate press, a frame and a bed travelling around the frame, guiding devices at the corners of the frame having cam surfaces and four members depending from inside the four corners of the bed and a fifth member depending from the center of the bed with at least three of said members engaging the cam surfaces to guide the bed around said corners of the frame, and a transversely movable plate shiftable in a rectilinear path and carrying part of said guiding devices to adjust the latter in said frame.

5. In a power plate press, a frame, a common means for driving a plate-carrying bed travelling around the frame and rotating, a pressure reaction roller and impression cylinder between which the bed travels at the same linear speed as the peripheral speed of said roller and cylinder, a centrally-disposed groove formed in the cylindrical surface of said reaction roller, and a roller on said bed-driving means engaging said reaction roller groove for positively guiding and maintaining the bed in its straight-line path as it passes over said reaction roller.

6. In a power plate press, a frame, a plate supporting bed, a pressure reaction roller and impression cylinder between which the bed travels, common means for actuating the bed and rotating the roller and cylinder in synchronism, and means comprising a groove in the cylindrical surface of the roller and a roller mounted on the bed-driving means and riding in said groove for positively maintaining the bed in its rectilinear travel beneath said roller while the bed passes between said roller and cylinder.

'7. In a power plate press, a frame, a plate supporting bed, means for rotating a pressure reaction roller and impression cylinder between which the bed travels, and means including an over-running clutch associated with said roller rotating means for actuating the bed and rotating the roller and cylinder in synchronism while the bed passes between said roller and cylinder.

8. In a power plate press, a frame, a bed travelling around the corners of the frame in an arcuate path, a curved guiding surface located adjacent the frame corners beneath said bed, a roller depending from the center of the bed and positively engaging said guiding surface for guiding the bed throughout all stages in its arcuate path, and means comprising a plate transversely movable in the frame and carrying said guiding surface for adjusting the latter in a rectilinear path in said frame.

9. In a power plate press, a frame, a bed travelling around the corners of the frame in an arcuate path, cam guiding surfaces located adjacent the frame corners beneath said bed, rollers depending inside the corners of the bed and positively engaging said cam surfaces for maintaining the position of the bed as the latter moves around said corners, and means comprising a plate transversely movable in the frame and carrying said cam surfaces for adjusting the latter in a rectilinear path in said frame.

10. In a power plate press, a frame, a bed travelling around the corners of the frame in an arcuate path, curved cam surfaces located adjacent the frame corners beneath said bed, a roller depending from the center of the bed and positively engaging said cam surfaces for guiding the bed throughout all stages in its arcuate path, rollers depending inside the four corners of the bed for maintaining the position of the bed as the latter moves around said corners, and means comprising a transversely movable plate carrying said surfaces for adjusting said cam surfaces in a rectilinear path on the frame.

11. In a flat plate printing machine, a plurality of units adapted to act in cooperation with a printing plate to print sheets, a plate carrying plank, plank guides extending about said machine past each unit, a plurality of sprockets, an endless chain extending about said sprockets and driven by one 'of said sprockets to move said plank past each unit, and means comprising a transversely movable plate carrying two of the other adjacent sprockets and associated plank guides to adjust same rectilinear to compensate for elongation of the chain.

12. In an intaglio plate printing machine, a frame, guideways on the frame adapted to guide a plurality of plate supports through a rectangular path, an endless flexible member adapted to propel the plate supports about said path, means to drive the flexible member, guide members for said flexible member arranged at two adjacent corners of the rectangular path, and means comprising a plate transversely movable in the frame and carrying a portion of the guideways and the guiding members to move same rectilinearly to adjust the tension of the flexible member.

13. In a power plate press, a frame, a bed travelling around the frame in alternate rectilinear and arcuate paths, and a member depending from the bed inside each of the four corners and at the center thereof with at least two members positively guiding and maintaining the bed in proper alignment during its rectilinear travel and at least three of said members positively guiding and maintaining the bed in proper alinement during its arcuate travel around the frame.

14. Ina power plate press, a frame, a bed travelling around the frame in alternate rectilinear and arcuate paths, and a roller depending from the bed inside each of the four corners and at the center thereof with at least two rollers positively guiding and maintaining the bed in proper alinement during its rectilinear travel and at least three of said rollers positively guiding and maintaining the bed in proper alinement during its arcuate travel around the frame.

- CHRISTEN R. KADDELAND. 

